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Cloud & Infrastructure
AWS Blog·Jul 1·5 min read
AWS Blog·Jul 1·5 min readUpgrade Amazon EKS clusters with confidence using Kubernetes version rollbacks
TL;DR
Upgrading Kubernetes control planes has traditionally been risky, as there was no way to revert to a previous version after an upgrade. Amazon EKS now offers a version rollback feature that allows administrators to revert to a previous Kubernetes version within seven days if issues arise.
✦ Why It Matters
Engineers can now upgrade Kubernetes with confidence, knowing they can quickly revert if problems occur.
Key Takeaways
- Utilize EKS version rollback to enhance upgrade confidence.
- Assess rollback readiness before proceeding with upgrades.
- Leverage EKS Auto Mode for simplified cluster management.
- Stay updated with Kubernetes versions to ensure security compliance.
Full Summary
Kubernetes upgrades have historically posed a challenge for organizations, particularly in regulated environments, due to the lack of rollback options. To address this, Amazon Elastic Kubernetes Service (EKS) has introduced a version rollback feature, enabling cluster administrators to revert to a validated previous version within seven days of an upgrade.
This feature allows for a more confident upgrade process, as it eliminates the need for complex compensating mechanisms. EKS evaluates rollback readiness by checking node version compatibility and add-on dependencies, ensuring a smoother transition.
For users of EKS Auto Mode, both the control plane and managed nodes must be rolled back together, respecting pod disruption budgets. This capability is crucial for maintaining operational stability while keeping clusters up to date with security patches.
Overall, this feature empowers teams to adopt new Kubernetes versions more readily without the fear of irreversible issues.